I have a weird issue that I'm trying to diagnose. I have two 6950s in crossfire in PCIE2 and PCIE4 to take advantage of the x8/x8 PCIE bus width. In GPUZ, one is showing at x8 and one is showing at x4. I have confirmed they are in the correct PCIE slots. Everything is running stock for now.

I tried reseating the cards, removing them and swapping which slot they were in with no change.
I was able to replicate this using UEFI 1.60 (which the board shipped with) and the latest 2.10.
The issue persists after updating all the drivers in the first post in this thread.
I've done a complete wipe of all ATI drivers (11.9) and reinstalled.

I was able to test them individually in PCIE2 and both cards registered at x16. I can't seem to find any settings in either UEFI 1.60 or 2.10 that relate to PCIE bus width.

Other symptoms I am seeing - frequently, the machine will boot and the display will remain in power saving mode - indicating no signal is coming from the GPU. I have been able to replicate this with both single cards in PCIE2, as well as in crossfire. I can resolve this issue by powering off the system completely, rebooting and clearing CMOS.

Also, the mouse movement in UEFI went screwy with 2.10. It was fine with 1.60. I've been using the keyboard without issue.